739412640 has 72 divisors (see below), whose sum is σ = 2523250548. Its totient is φ = 197176320.

The previous prime is 739412633. The next prime is 739412647. The reversal of 739412640 is 46214937.

739412640 is a `hidden beast` number, since 7 + 3 + 9 + 4 + 1 + 2 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (739412633) and next prime (739412647).

It can be written as a sum of positive squares in 2 ways, for example, as 696326544 + 43086096 = 26388^2 + 6564^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 739412595 and 739412604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (739412647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255301 + ... + 258180.

Almost surely, 2^739412640 is an apocalyptic number.

It is an amenable number.

739412640 is an abundant number, since it is smaller than the sum of its proper divisors (1783837908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

739412640 is a wasteful number, since it uses less digits than its factorization.

739412640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513502 (or 513491 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 739412640 is about 27192.1429828544. The cubic root of 739412640 is about 904.2647956904.

The spelling of 739412640 in words is "seven hundred thirty-nine million, four hundred twelve thousand, six hundred forty".